"""merge ds5 and ds6 document heads Revision ID: af48d99d7321 Revises: 20260518_ds6_permanent_client_document_vault, 20260528_phase_ds5_secure_download_streaming Create Date: 2026-05-18 20:41:43.386276 """ from typing import Sequence, Union from alembic import op import sqlalchemy as sa revision: str = 'af48d99d7321' down_revision: Union[str, None] = ('20260518_ds6_permanent_client_document_vault', '20260528_phase_ds5_secure_download_streaming') branch_labels: Union[str, Sequence[str], None] = None depends_on: Union[str, Sequence[str], None] = None def upgrade() -> None: pass def downgrade() -> None: pass